Ekspos is a platform independent Java image viewer program. It support most popular image format: JPEG, PNG, and GIF, where an additional image format can be added through Java ImageIO plugin. It consists of 2 parts: shell browser and viewer.

jclasslib bytecode viewer is a tool that visualizes all aspects of compiled Java class files and the contained bytecode. In addition, it contains a library that enables developers to read, modify and write Java class files and bytecode.